ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,617, issued on Dec. 23, was assigned to SEIKO EPSON Corp. (Japan).
"Ink jet ink composition and recording method" was invented by Yuta Asakawa (Azumino, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An aqueous ink jet ink composition according to an aspect of the present disclosure is an ink jet ink composition including a pigment, a sparingly water-soluble low-molecular-weight organic compound, and a nonionic water-soluble resin, in which the pigment is a self-dispersion pigment or a resin dispersion pigment dispersed by a dispersant resin, and the nonionic water-soluble resin has a weight-average molecular weight of 2000 or greater, and a c...